Title :
A calibration-free method for measurement of sound speed in biological tissue samples
Author :
Ophir, J. ; Lin, T.
Author_Institution :
Dept. of Radiol., Texas Univ., Med. Sch., Houston, TX, USA
Abstract :
A transmission method for speed-of-sound measurement in biological tissue specimens is described. The technique involves detecting the time of arrival of a transmitted pulse with a small hydrophone that penetrates the tissue sample in accurately known increments. The technique allows localized measurements to be made without the error-prone task of measuring the thickness of the specimen and without calibration of the apparatus in a reference medium with known speed of sound.<>
Keywords :
bioacoustics; biological techniques and instruments; ultrasonic velocity measurement; biological tissue; calibration-free method; hydrophone; sound speed; transmission method; ultrasonic velocity; Acoustic pulses; Acoustic transducers; Biological materials; Biological tissues; Calibration; Pulse measurements; Sonar equipment; Thickness measurement; Time measurement; Velocity measurement;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
